2023 Honda Odyssey Electrical system Problems

“The power tailgate control unit (part #74970-THR-A12) failed on my 2023 Honda Odyssey at approximately 46,000 miles and 3 years of age. The tailgate stopped functioning entirely. Upon removing the interior rear trim panels to diagnose, I discovered the failure was caused by water intrusion into the rear body of the vehicle. …”

“Twice while at a stop light, when the car was in Auto Idle Stop, it suddenly shut down completely. There was no power on the dashboard. I couldn't even turn on the hazard lights. The first time, this lasted several minutes, the second time, a few seconds. After this time, the electronics spontaneously came back up and I was able to restart the engine.”

“Engine shut off in traffic after Auto Idle-Stop failed to restart. While stopped at a red light with Auto Idle-Stop active, the engine shut down normally. When I released the brake to proceed, all electrical power dropped—cluster went dark, accessories reset, and the engine did not crank. Vehicle coasted dead across the intersection and required a full key-cycle to restart, exposing my family and surrounding traffic to a collision risk. …”

“I am submitting a formal safety complaint regarding a failure of the power tailgate system on my 2023 Honda Odyssey. The issue involves water intrusion into the liftgate control system, which has resulted in corrosion and subsequent failure of the power tailgate. This malfunction presents both a safety concern and a significant reliability issue, particularly for a vehicle of this age and mileage. What is most concerning is that this does not appear to be an isolated incident. …”

“Seems like due to the auto idle, it makes the engine idle so low that it dies- my car died in middle of the road- the first time, I had it jumped, and mechanic said it was a fluke, second time, despite the testing not showing any issue, he said we can try to replace the battery, so we did, but 6 weeks later my car died, and it took 5 attempts to get it to restart with the external battery pack! each time there was NO issue with the electrical system- my A/C was running fine, the whole dashboard showed up fine. …”